linux-kernel - [PATCH v10 1/5] arm64: KVM: Prepare set virtual SEI syndrome value

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Date:   Sun, 4 Mar 2018 00:09:36 +0800
From:   Dongjiu Geng <gengdongjiu@...wei.com>
To:     <rkrcmar@...hat.com>, <corbet@....net>,
        <christoffer.dall@...aro.org>, <marc.zyngier@....com>,
        <james.morse@....com>, <linux@...linux.org.uk>,
        <catalin.marinas@....com>, <rjw@...ysocki.net>, <bp@...en8.de>,
        <lenb@...nel.org>, <kvm@...r.kernel.org>,
        <linux-doc@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
        <linux-arm-kernel@...ts.infradead.org>,
        <kvmarm@...ts.cs.columbia.edu>, <linux-acpi@...r.kernel.org>,
        <devel@...ica.org>
CC:     <gengdongjiu@...wei.com>, <huangshaoyu@...wei.com>
Subject: [PATCH v10 1/5] arm64: KVM: Prepare set virtual SEI syndrome value

Export one API to specify virtual SEI syndrome value
for guest, and add a helper to get the VSESR_EL2 value.

Signed-off-by: Dongjiu Geng <gengdongjiu@...wei.com>
---
 arch/arm64/include/asm/kvm_emulate.h | 5 +++++
 arch/arm64/include/asm/kvm_host.h    | 2 ++
 arch/arm64/kvm/inject_fault.c        | 5 +++++
 3 files changed, 12 insertions(+)

diff --git a/arch/arm64/include/asm/kvm_emulate.h b/arch/arm64/include/asm/kvm_emulate.h
index 413dc82..3294885 100644
--- a/arch/arm64/include/asm/kvm_emulate.h
+++ b/arch/arm64/include/asm/kvm_emulate.h
@@ -71,6 +71,11 @@ static inline void vcpu_set_hcr(struct kvm_vcpu *vcpu, unsigned long hcr)
 	vcpu->arch.hcr_el2 = hcr;
 }
 
+static inline unsigned long vcpu_get_vsesr(struct kvm_vcpu *vcpu)
+{
+	return vcpu->arch.vsesr_el2;
+}
+
 static inline void vcpu_set_vsesr(struct kvm_vcpu *vcpu, u64 vsesr)
 {
 	vcpu->arch.vsesr_el2 = vsesr;
diff --git a/arch/arm64/include/asm/kvm_host.h b/arch/arm64/include/asm/kvm_host.h
index a73f63a..3dc49b7 100644
--- a/arch/arm64/include/asm/kvm_host.h
+++ b/arch/arm64/include/asm/kvm_host.h
@@ -354,6 +354,8 @@ void handle_exit_early(struct kvm_vcpu *vcpu, struct kvm_run *run,
 int kvm_perf_init(void);
 int kvm_perf_teardown(void);
 
+void kvm_set_sei_esr(struct kvm_vcpu *vcpu, u64 syndrome);
+
 struct kvm_vcpu *kvm_mpidr_to_vcpu(struct kvm *kvm, unsigned long mpidr);
 
 static inline void __cpu_init_hyp_mode(phys_addr_t pgd_ptr,
diff --git a/arch/arm64/kvm/inject_fault.c b/arch/arm64/kvm/inject_fault.c
index 60666a0..78ecb28 100644
--- a/arch/arm64/kvm/inject_fault.c
+++ b/arch/arm64/kvm/inject_fault.c
@@ -186,3 +186,8 @@ void kvm_inject_vabt(struct kvm_vcpu *vcpu)
 {
 	pend_guest_serror(vcpu, ESR_ELx_ISV);
 }
+
+void kvm_set_sei_esr(struct kvm_vcpu *vcpu, u64 syndrome)
+{
+	pend_guest_serror(vcpu, syndrome & ESR_ELx_ISS_MASK);
+}
-- 
1.9.1